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Ontario Geological Survey
Permanent Link to this Record:
MDI42C02NW00036
| Record Name(s) | Gq Diamond Occurrence - 2000 |
|---|---|
| Related Record Type | Simple |
| Record Status | Occurrence |
| Date Created | 2000-Nov-24 |
| Date Last Modified | 2022-Jan-05 |
| Created By | A Wilson |
| Revised By | A Wilson |
Primary Commodities: Diamond
Township or Area: Musquash
Latitude: 48° 7' 52.77" Longitude: -84° 46' 28.94"
UTM Zone: 16 Easting: 665570.67 Northing: 5333291.69 UTM Datum: NAD83
Resident Geologist District: Sault Ste. Marie
NTS Grid: 42C02NW
Point Location Description: Stripped outcrop on north side of bush road
Location Method: Field Visit with GPS
Access Description: Drive north along Highway 17 for approximately 22 km from the junction between Highway 17 and Highway 101. Follow the Musquash Township forestry road northeast for approximatley 4 km to the junction of a second forestry road. The discovery outcrop is on the northeast side of the junction.
1999: T. Nicholson, J. Robert, M. Tremblay - discovery and property acquisition. 2000: Band-Ore Resources Ltd. - airborne geophysics, sampling, stripping, 3 ddh (75 m).
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Michipicoten
Tectonic Assemblage: Wawa
Geological Age: Neoarchean Geochronological Age: 2750 MA Geochron. Age Ref.: GOO VOL 1
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
Dec 07, 2005 (A Wilson) - The diamond occurrences appear to be restricted to a D1 recumbent nappe in the west-central portion of the Michipicoten greenstone belt. The nappe is imbricated by south-vergin reverse faults. The direction of nappe transport is from south to north and it lies immediately north and adjacent to the Kapuskasing Structural Zone. This thrusting and shortening may be related to the tectonic events along the Kapuskasing Structural Zone. The western limit of the nappe is likely the Dickenson Lake fault that passes to the west of the Dickenson Lake stock. The nappe is not likely to extend east beyond the Marsden Fault.
| Rock Type | Rank | Composition | Texture | Relationship | Lamprophyre-Unsubdivided | 1 | Spessartite | Host |
|---|---|---|---|---|
| Intermediate Tuff | 2 | Tuff | Near |
Dec 07, 2005 (A Wilson) - The discovery outcrop consists of a xenolith-bearing lamprophyre dike injected into intermediate tuffaceous metavolcanic rocks. The dike is thought to be 8-20 m thick and may extend for over a kilometer based on exploration information available to date.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Diamond | Economic | Ore |
Dec 07, 2005 (A Wilson) - The initial sample from the discovery outcrop yielded a total of 45 diamonds of which 10 were macrodiamonds, including one stone measuring 1.01 mm in one dimmednsion (sample wieth 63.4 kg). A second sample collected 0.5 km away yielded 9 macrodimaonds from 70.5 kg. Two samples collected by Band-Ore yielded 98 microdiamonds from 54.6 kg and 2 micordiamonds from 53.8 kg. All stones are reported to be clear and colourless. A total of 533 daimonds were recored from 6 diamond drill core samples. The composite samples weighed 219.03 kg. Additional sampling in the vicinity of the discovery showing has shown the presence of diamonds in a 100 m vicinity of the original showing.
Map - Geological series, Precambrian geology of Musquash Township, Algoma District
Publication Number: P2568 Scale: 1:15,840 Date: 1982
Author: Sage R.P., England D., Calvert T., Oudkerk G., Worona R., Koscinsko K.
Publisher Name: Ontario Geological Survey
MonoMap - Geology of Abotossaway, Corbiere, Leclaire and Musquash Townships and Part of Dunphy Township, District of Algoma
Publication Number: OFR5587 Scale: Date: 1993
Author: Sage R.P.
Publisher Name: Ontario Geological Survey
Book - BAND-ORE RESOURCES LTD. - CLIPPINGS FILE
Publication Number: Clippings Scale: Date: 2000
Author:
Publisher Name:
Map - Precambrian Geology Compilation Series - White River Sheet
Publication Number: M2666 Scale: 1:250,000 Date: 2001
Author: Santaguida F.
Publisher Name: Ontario Geological Survey
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For detailed information regarding this mineral record please contact the Sault Ste. Marie Resident Geologist District Office